implement the HOG(histogram of Gradient) feature extraction in matlab.
This source code is orignally from [1]http://www.cnblogs.com/tiandsp/archive/2013/05/24/3097503.html I made a little changes so that you can run the hogtest.m directly for a test.
Also detailed description of the HOG descriptor can be found in the following references. [2]http://blog.csdn.net/zouxy09/article/details/7929348; [3]http://blog.csdn.net/liulina603/article/details/8291093.